While using the editor, most basic keyboard shortcuts work like in any other text editor. For example: Shift+Enter inserts line break, Ctrl+C = copy, Ctrl+X = cut, Ctrl+Z = undo, Ctrl+Y = redo, Ctrl+A = select all, etc. (on Mac use the Command key instead of Ctrl). See the Hotkeys tab for all available keyboard shortcuts.

Rather than reaching for your mouse to click on the toolbar, use these access keys. Windows and Linux use Ctrl + letter. Macintosh uses Command + letter.

Letter	Action	Letter	Action
c	Copy	v	Paste
a	Select all	x	Cut
z	Undo	y	Redo
b	Bold	i	Italic
u	Underline	1	Heading 1
2	Heading 2	3	Heading 3
4	Heading 4	5	Heading 5
6	Heading 6	9	Address

The following shortcuts use different access keys: Alt + Shift + letter.

Letter	Action	Letter	Action
n	Check Spelling	l	Align Left
j	Justify Text	c	Align Center
d	Strikethrough	r	Align Right
u	• List	a	Insert link
o	1. List	s	Remove link
q	Quote	m	Insert Image
g	Full Screen	t	Insert More Tag
p	Insert Page Break tag	h	Help
e	Switch to HTML mode

source: http://codex.wordpress.org/Keyboard_Shortcuts

Using Keyboard Shortcuts to Navigate

Navigating comments is accomplished with the j and k keys. When you first visit the Comments page, no comments is selected, so, first press the letter j, or the letter k, to select the first comment. After that, just press the letter j to move the select to the next comment.

• Pressing j moves the current selection (light-blue background) down.
• Pressing k moves the current selection (light-blue background) up.

Note that if you come to the bottom of a page of comments and press j again, you will be taken to the next page and the first comment of that next page will be selected. Likewise, pressing k at the top of a comment page will zoom you to the previous page, selecting the comment at the bottom of that previous page. This makes it very easy to navigate through a long list of comments to perform the necessary actions.

Using Keyboard Shortcuts to Perform Actions

For one of these actions to affect a comment, make sure the comment is first selected (see above).

• Pressing a approves the currently selected comment.
• Pressing s marks the current comment as spam.
• Pressing d moves the comment to the trash (WordPress 2.9) or deletes the current comment.
• Pressing z restores the current comment from the trash or activates the Undo when that row is selected.

Note that those first three actions (and most common actions) use the three left-most keys of the home row of a QWERTY keyboard. It is recommended that you shift your hand to the left so that your index finger is on d instead of on f, as is normal.

• Pressing u unapproves the currently selected comment, placing it back into moderation.
• Pressing r initiates an inline reply to the current comment (you can press Esc to cancel the reply).
• Pressing q activates “Quick Edit” which allows for rapid inline editing of the current comment.

Bulk Actions

You can also perform an action on multiple comments at once. First, you’ll need to select the comments for the bulk action, using the x key to check the checkbox for the currently selected comment. Shift-x can be used to toggle the checkboxes, inverting their state. Once you have some comments checked:

• Pressing Shift-a approves the checked comments.
• Pressing Shift-s marks the checked comments as spam.
• Pressing Shift-d deletes the checked comments.
• Pressing Shift-u unapproves the checked comments.
• Pressing Shift-t moves the checked comments to the Trash.
• Pressing Shift-z restores the checked comments from the Trash.

source: http://support.mozilla.com/en-US/kb/Keyboard+shortcuts

This is a list of keyboard shortcuts in Mozilla Firefox.

Command	Shortcut
Navigation
Back	Alt+Left Arrow Backspace
Forward	Alt+Right Arrow Shift+Backspace
Home	Alt+Home
Open File	Ctrl+O
Reload	F5 Ctrl+R
Reload (override cache)	Ctrl+F5 Ctrl+Shift+R
Stop	Esc
Current Page
Go to Bottom of Page	End
Go to Top of Page	Home
Move to Next Frame	F6
Move to Previous Frame	Shift+F6
Page Info
Page Source	Ctrl+U
Print	Ctrl+P
Save Page As	Ctrl+S
Zoom In	Ctrl++
Zoom Out	Ctrl+-
Zoom Reset	Ctrl+0
Editing
Copy	Ctrl+C
Cut	Ctrl+X
Delete	Delete
Paste	Ctrl+V
Redo	Ctrl+Y
Select All	Ctrl+A
Undo	Ctrl+Z
Search
Find	Ctrl+F
Find Again	F3 Ctrl+G
Find As You Type Link	'
Find As You Type Text	/
Find Previous	Shift+F3
Web Search	Ctrl+K Ctrl+E
Windows & Tabs (see Tabbed Browsing )
Close Tab	Ctrl+W Ctrl+F4
Close Window	Ctrl+Shift+W Alt+F4
Move Tab Left (when tab is focused)	Ctrl+Left Arrow Ctrl+Up Arrow
Move Tab Right (when tab is focused)	Ctrl+Right Arrow Ctrl+Down Arrow
Move Tab to Beginning (when tab is focused)	Ctrl+Home
Move Tab to End (when tab is focused)	Ctrl+End
New Tab	Ctrl+T
New Window	Ctrl+N
Next Tab	Ctrl+Tab Ctrl+Page Down
Open Address in New Tab (from Location Bar or Search Bar)	Alt+Enter
Previous Tab	Ctrl+Shift+Tab Ctrl+Page Up
Undo Close Tab	Ctrl+Shift+T
Undo Close Window	Ctrl+Shift+N
Select Tab (1 to	Ctrl+(1 to 8)
Select Last Tab	Ctrl+9
Tools
Bookmark All Tabs	Ctrl+Shift+D
Bookmark This Page	Ctrl+D
Bookmarks	Ctrl+B Ctrl+I
Library window	Ctrl+Shift+B
Caret Browsing	F7
Downloads	Ctrl+J
History	Ctrl+H
Toggle Private Browsing	Ctrl+Shift+P
Clear Recent History	Ctrl+Shift+Del
Error Console	Ctrl+Shift+J
Miscellaneous
Complete .com Address	Ctrl+Enter
Complete .net Address	Shift+Enter
Complete .org Address	Ctrl+Shift+Enter
Delete Selected Autocomplete Entry	Del
Toggle Full Screen	F11
Help	F1
Toggle Menu Toolbar (when hidden)	ALT
Select Location Bar	Alt+D F6 Ctrl+L
Select or Manage Search Engines (when Search Bar is focused)	Alt+Up Arrow Alt+Down Arrow F4
Media shortcuts(OGG/Theora Videos Only)
Toggle Play / Pause	Space
Decrease volume	Arrow down
Increase volume	Arrow up
Mute audio	Ctrl+Down Arrow
Unmute audio	Ctrl+Arrow up
Seek back 15 seconds	Left Arrow
Seek back 10 %	Ctrl+Left Arrow
Seek forward 15 seconds	Right Arrow
Seek forward 10 %	Ctrl+Right Arrow
Seek to the beginning	Home
Seek to the end	End

Here you will find shortcuts keys for Keyboard and Mobile Phones..

Do tell us about more shortcuts that you know..

Thanks!